NWM

NWS

Worm Gear Reducers

NWM 110B 40 180TC Foot Mount B3 Torque Arm

Model Size Ratio Input Size Output Design Mounting Accessories

Aluminum Housing 548C

Shaft Mounted

standard hollow output bore

B3Torque Arm30B 7.5

40B 1056C B6

50B 15

Baseplate63B 20140TC

Foot Mounted

optional single or double plug-

in output shaft

B775B 25

90B 30180TC B8 Double Extension

Worm Shaft-- 40

Cast Iron Housing 50210TC

Flange Mounted

optional FA mounting fl ange

and hollow output bore

V5110B 60

Protective Cover130B 80-- V6

-- 100

1 Aluminum alloy housing with patented heat sink design provides greater surface area and higher thermal capacity than traditional cast-iron housings.

2 Two bearings along the input shaft prevent leaks and contribute to fl exibility in mounting. High quality bearings increase reducer life versus worm reducers with a bushing on the input.

3 NEMA and IEC motor inputs available for greater customer fl exibility.

4 Double-lip oil seals aid the reducer’s thermal capacity and extended the reducer’s oil life.

5 Use of O-rings on the input fl ange and output cover pre-vents leaks more eff ectively than a paper gasket.

6 Hardened worm shaft gives increased durability versus forged worm shafts.

7 Standard hollow output bore and optional plug-in shafts provide greater fl exibility in ordering and reduced inventory.

8 Polyester epoxy paint applied on the inside and outside of the gearcase protects against rust.

9 There is no breather for size 30B to 90B, there is breather for size 110B and 130B. NWM and NWS are universal mount-ing, sealed for life, mainte-nance-free reducers.

10 No compression chamber required, preventing leaks and the risk of oil oxidation and contamination, and contribut-ing to mounting fl exibility.

11 Automated manufacturing process from an ISO 9001 certifi ed company assures quality, reliable gearing.

12 Aluminum units are prefi lled with synthetic oil; cast iron units are prefi lled with min-eral oil.

1

2

3

4

56

4

7

2

8

Nomenclature

Features

NWMMotor Input Flange

NMSInput Shaft

2

Worm Gear Reducer Ratings 1750 rpm

SizeExact Ratio

i

Output Speed

rpm

Max Torquein-lbs

Max Input

HPOHL

75B

7.5 233 1555 6.47 581

10 175 1639 5.17 639

15 117 1681 3.62 732

20 88 1765 2.95 806

25 70 1681 2.31 868

30 58 1933 2.32 922

40 44 1849 1.76 1015

50 35 1765 1.40 1093

60 29 1681 1.18 1162

80 22 1597 0.91 1279

100 18 1513 0.75 1378

90B

7.5 233 2681 11.03 643

10 175 2866 8.94 708

15 117 3329 7.08 810

20 88 3287 5.37 891

25 70 3144 4.21 960

30 58 3631 4.26 1020

40 44 3329 3.04 1123

50 35 3144 2.39 1210

60 29 2959 1.96 1286

80 22 2396 1.30 1415

100 18 2270 1.05 1524

110B

7.5 233 4640 19.09 812

10 175 5027 15.69 894

15 117 5514 11.74 1023

20 88 5413 8.74 1126

25 70 5707 7.46 1213

30 58 6094 7.05 1289

40 44 5901 5.19 1419

50 35 5548 3.58 1529

60 29 5178 3.26 1625

80 22 4329 2.21 1788

100 18 4060 1.76 1926

130B

7.5 233 6304 25.65 1062

10 175 6893 21.51 1169

15 117 7733 16.46 1339

20 88 7649 12.21 1473

25 70 7817 10.22 1587

30 58 8742 9.99 1686

40 44 8826 7.76 1856

50 35 8238 6.02 2000

60 29 7565 4.80 2125

80 22 7061 3.55 2339

100 18 6220 2.66 2519

SizeExact Ratio

i

Output Speed

rpm

Max Torquein-lbs

Max Input

HPOHL

30B

5 350 160 1.02 125

7.5 233 160 0.70 143

10 175 160 0.53 157

15 117 160 0.38 180

20 88 151 0.28 198

25 70 185 0.30 213

30 58 177 0.25 226

40 44 160 0.18 249

50 35 151 0.15 268

60 29 134 0.12 285

80 22 109 0.08 314

40B

5 350 303 1.89 240

7.5 233 353 1.50 274

10 175 370 1.21 302

15 117 370 0.83 346

20 88 361 0.64 380

25 70 328 0.48 410

30 58 403 0.53 435

40 44 378 0.40 479

50 35 353 0.31 516

60 29 328 0.26 549

80 22 277 0.18 604

100 18 244 0.14 651

50B

5 350 572 3.57 329

7.5 233 647 2.72 377

10 175 664 2.12 414

15 117 681 1.52 474

20 88 656 1.14 522

25 70 597 0.86 562

30 58 740 0.94 598

40 44 689 0.70 658

50 35 647 0.56 709

60 29 605 0.47 753

80 22 546 0.35 829

100 18 462 0.26 893

63B

7.5 233 1076 4.48 492

10 175 1093 3.49 542

15 117 1177 2.59 620

20 88 1135 1.92 683

25 70 1093 1.54 735

30 58 1345 1.66 781

40 44 1219 1.19 860

50 35 1135 0.94 926

60 29 1093 0.80 984

80 22 1025 0.61 1083

100 18 992 0.53 1167

3

Worm Gear Reducers

Dimensions

Size 30B 40B 50B 63B 75B 90B 110B 130B

RH 0.71 0.84 1.11 1.24 1.37 1.52 1.80 1.92

SH 0.1875 0.1875 0.250 0.250 0.250 0.3125 0.375 0.375

UH

VB 0.83 1.02 1.18 1.42 1.57 1.77 1.97 2.36

0.625 + 0.0010 0.750 + 0.001

0 1.000 + 0.0010 1.125 + 0.001

0 1.250 + 0.0010 1.375 + 0.001

0 1.625 + 0.0010 1.750 + 0.001

0

Hollow Output Bore

Size 30B 40B 50B 63B 75B 90B 110B 130B

R 0.70 0.83 1.11 1.23 1.36 1.51 1.79 1.92

S 0.1875 0.1875 0.250 0.250 0.250 0.3125 0.375 0.375

U

U KEY 0.1875 x 1.250 0.1875 x 1.500 0.250 x 1.500 0.250 x 2.000 0.250 x 2.250 0.3125 x 2.50 0.375 x 2.750 0.375 x 2.750

UT 1/4 - 20 1/4 - 20 3/8 - 16 3/8 - 16 1/2 - 13 1/2 -13 5/8 - 11 5/8 - 11

V 1.57 1.97 1.97 2.36 2.76 3.15 3.54 3.54

VA 1.67 2.09 2.11 2.50 2.89 3.33 3.72 3.74

Y 5.82 7.25 7.84 9.41 10.50 12.17 13.54 14.17

0.6250

- 0.0005 0.7500

- 0.0005 1.0000

- 0.0005 1.1250

- 0.0005 1.2500

- 0.0005 1.3750

- 0.0005 1.6250

- 0.0005 1.7500

- 0.0005

Output Shaft

NWM

Shaft Mount Foot Mount Flange Mount

Hollow Output Bore

Output Shaft Output Flange

NWS

4

DimensionsSize 30B 40B 50B 63B 75B 90B 110B 130B

A 2.48 3.07 3.62 4.41 4.72 5.51 6.10 6.69

B 2.24 2.81 3.31 4.02 4.69 5.31 6.59 7.38

BA 2.56 2.95 3.35 3.74 4.53 5.12 6.50 8.46

BC 2.95 3.43 3.94 4.33 5.51 6.30 7.87 9.84

BH 0° 45° 45° 45° 45° 45° 45° 45°

BK

BL M6x11 (N = 4) M6x10 (N = 4) M8x14 (N = 4) M8x14 (N = 8) M8x14 (N = 8) M10x18 (N = 8) M10x18 (N = 8) M12x21 (N = 8)

C 1.18 1.57 1.97 2.48 2.95 3.54 4.33 5.12

D 1.57 1.97 2.36 2.83 3.39 4.06 5.02 5.81

E 2.13 2.76 3.15 3.94 4.72 5.51 6.69 7.87

F 1.73 2.36 2.76 3.35 3.54 3.94 4.53 4.72

G 0.22 0.26 0.28 0.31 0.39 0.43 0.59 0.59

H 0.26 0.28 0.33 0.33 0.43 0.51 0.55 0.63

J 3.15 3.94 4.72 5.67 6.77 8.11 9.92 11.50

K 1.26 1.69 1.93 2.64 2.83 2.91 - -

L 2.20 2.80 3.35 4.06 4.41 5.12 5.67 6.10

M 2.28 2.87 3.43 4.17 4.49 5.28 5.83 6.38

N 1.06 1.38 1.57 1.97 2.36 2.76 3.35 3.94

O 3.82 4.78 5.67 6.85 8.07 9.37 11.61 13.19

P 2.64 3.15 3.54 4.13 4.96 5.63 6.81 7.60

Q 1.97 2.40 2.91 3.54 4.13 4.92 5.59 6.38

T 1.73 2.17 2.52 3.15 3.66 4.02 4.92 5.51

Z 2.91 3.63 3.92 4.71 5.25 6.09 6.77 7.09

2.165 0- 0.0018 2.362 0

- 0.0018 2.756 0- 0.0018 3.150 0

- 0.0021 3.740 0- 0.0021 4.331 0

- 0.0021 5.118 0- 0.0021 7.087 0

- 0.0021

Output Flange (FA)Size 30B 40B 50B 63B 75B 90B 110B 130B

AA 2.68 3.15 3.35 5.91 6.50 6.89 9.06 10.04

AB 2.15 2.64 3.54 3.23 4.37 4.37 5.16 5.51

AC 3.15 4.33 4.92 7.09 7.87 8.27 11.02 12.60

AD 2.76 3.74 4.33 5.59 6.69 7.87 10.24 11.42

AF 0.24 0.28 0.35 0.39 0.51 0.51 0.59 0.59

AG 0.16 0.16 0.20 0.24 0.24 0.24 0.24 0.24

AH 45° 45° 45° 45° 45° 45° 45° 22.5°

AK

AL 0.26 0.35 0.43 0.43 0.55 0.55 0.55 0.63

1.969 0+ 0.0015 2.362 0

+ 0.0018 2.756 0+ 0.0018 4.528 0

+ 0.0021 5.118 0+ 0.0025 5.984 0

+ 0.0025 6.693 0+ 0.0025 7.087 0

+ 0.0025

Input ShaftSize 40B 50B 63B 75B 90B 110B 130B

SB 0.125 0.1875 0.1875 0.1875 0.1875 0.250 0.250

RB 0.55 0.70 0.83 0.96 0.96 1.24 1.36

UB

UB KEY 0.125 x 1.000 0.1875 x 1.250 0.1875 x 1.500 0.1875 x 2.000 0.1875 x 2.000 0.250 x 2.250 0.250 x 2.500

UR 1/4 - 20 1/4 - 20 1/4 - 20 1/4 - 20 1/4 - 20 3/8 - 16 1/2 - 13

VN 1.18 1.58 1.97 2.36 2.36 2.76 3.15

0.500 0- 0.0005 0.625 0

- 0.0005 0.750 0- 0.0005 0.875 0

- 0.0005 0.875 0- 0.0005 1.125 0

- 0.0005 1.250 0- 0.0005

5

Worm Gear Reducers

Accessories

Torque ArmSize I IA IL IR IW

30B 3.35 0.94 0.31 0.59 0.55

40B 3.94 1.24 0.39 0.71 0.55

50B 3.94 1.52 0.39 0.71 0.55

63B 5.91 1.93 0.39 0.71 0.55

75B 7.87 1.87 0.79 1.18 0.98

90B 7.87 2.26 0.79 1.18 0.98

110B 9.84 2.44 0.98 1.38 1.18

130B 9.84 2.72 0.98 1.38 1.18

Protective CoverSize Q

30B 1.65

40B 1.97

50B 2.28

63B 2.72

75B 2.91

90B 3.39

110B 3.70

130B 4.02

High Speed Extension ShaftSize EA U VN UR S2 R2 KEY

40B 2.09 1.18 1/4 - 20 0.125 0.55 0.125 x 1.000

50B 2.52 1.57 1/4 - 20 0.1875 0.70 0.1875 x 1.250

63B 2.95 1.97 1/4 - 20 0.1875 0.83 0.1875 x 1.500

75B 3.54 2.36 1/4 - 20 0.1875 0.96 0.1875 x 2.000

90B 4.25 2.36 1/4 - 20 0.1875 0.96 0.1875 x 2.000

110B 5.31 2.76 3/8 - 16 0.250 1.24 0.250 x 2.250

130B 6.10 3.15 1/2 - 13 0.250 1.36 0.250 x 2.500

0.500 0- 0.0005

0.625 0- 0.0005

0.750 0- 0.0005

0.875 0- 0.0005

0.875 0- 0.0005

1.125 0- 0.0005

1.250 0- 0.0005

BaseplatesSize 30B 40B-A 40B-B 50B 63B-A 63B-B 75B 90B

A 4.37 4.37 5.75 6.38 7.05 7.99 8.43 9.49

B 3.31 3.31 4.49 4.69 4.88 5.24 5.87 6.14

C 0.34 0.34 0.41 0.49 0.49 0.49 0.49 0.49

DA 2.24 2.64 2.76 2.99 3.50 3.66 4.00 4.63

DB 3.43 4.21 4.33 4.96 5.98 6.14 6.95 8.17

T 0.67 0.67 0.79 0.63 0.67 0.83 0.61 0.57

6

Mounting and Availability

Mounting Positions

NEMA Flange Availability

*PLEASE NOTE: Mounting the reducer in V5 or V6 position may require added bearing maintenance. Please contact a NIDEC-SHIMPO Technical Service Representative for assistance with these mounting positions.

V6*V5*B6

B7

B3

B8

SizeNEMAFlange

Input BoreDiameter

Available Ratios

5 7.5 10 15 20 25 30 40 50 60 80 100

30B 48C 0.500 • • • • • • • • • • •

40B 56C 0.625 • • • • • • • • • • • •

50B 56C 0.625 • • • • • • • • • • • •

63B56C 0.625 • • • • • • • • •

140TC 0.875 • • • • • • •

75B

56C 0.625 • • • • •

140TC 0.875 • • • • • • • •

180TC 1.125 • • •

90B

56C 0.625 • •

140TC 0.875 • • • • •

180TC 1.125 • • • • • • •

110B

140TC 0.875 • • • •

180TC 1.125 • • • • • •

210TC 1.375 • • • •

130B

140TC 0.875 • •

180TC 1.125 • • • • •

210TC 1.375 • • • • • • •

7

NIDEC MOTOR CANADA CORPORATION6617 Thimens Blvd

Saint-Laurent, Québec H4S 1W2, CanadaPhone: (514) 332-1880

www.drives.nidec-shimpo.com